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evdev: fix off-by-one error in decode_bitset

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* evdev.c (decode_bitset): Decrement sorted/indexed xlat's size by one
in order to account for guarding XLAT_END, as other sorted/indexed xlat
wrappers do.

Fixes: v4.23~261 "evdev: support various types of xlats in decode_bitset"
This commit is contained in:
Eugene Syromiatnikov 2018-12-20 16:35:27 +01:00 committed by Dmitry V. Levin
parent f6869581d4
commit 8a5feb1cb3
1 changed files with 1 additions and 1 deletions
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evdev.c
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@ -188,7 +188,7 @@ decode_bitset_(struct tcb *const tcp, const kernel_ulong_t arg,
#define decode_bitset(tcp_, arg_, decode_nr_, max_nr_, dflt_, xt_) \
decode_bitset_((tcp_), (arg_), (decode_nr_), (max_nr_), \
(dflt_), ARRAY_SIZE(decode_nr_), (xt_))
(dflt_), ARRAY_SIZE(decode_nr_) - 1, (xt_))
# ifdef EVIOCGMTSLOTS
static int